A starter diet is the type of feed given to poultry birds from a day old to four (4) weeks and a day old to three (2) weeks for pullets and broilers respectively, during the brooding stage.A broiler is fast maturing meat-producing bird that attains market maturity at about six weeks of age, pullet is the young laying chick with cockerel being the male sorted out of pullets, mature at 18 weeks.